Ultrasound assisted enzyme catalysed synthesis of butyl caprylate in solvent free system

Sose, Meera T.; Rathod, Virendra K.

doi:10.1080/00194506.2020.1750975

Cited by 3 publications

(4 citation statements)

References 43 publications

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“…Immature barley BIM encompassed 9.3% versus 6.3% in BM. Butyl caprylate ester is employed in food and beverage, pharmaceutical, and cosmetics industries, owing to its characteristic fruity flavor [ 41 ].…”

Section: Resultsmentioning

confidence: 99%

Effect of Maturity Stage on Cereal and Leguminous Seeds’ Metabolome as Analyzed Using Gas Chromatography Mass-Spectrometry (GC-MS) and Chemometric Tools

et al. 2023

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Cereal and leguminous seeds are considered as major generic dietary source of energy, carbohydrates as well as proteins in the Mediterranean diet and are frequently consumed in their immature form in several regions including the Middle East. Hence, the current study aimed to assess metabolites’ heterogeneity amongst five major cereal and leguminous seeds of different species, and cultivars, i.e., Triticum aestivum L. (two cultivars), Hordeum vulgare L., Vicia faba L. and Cicer arietinum L., at different maturity stages. Gas chromatography mass-spectrometry (GC-MS) analysis using multivariate data analyses was employed for nutrient profiling and sample segregation assessed using chemometric tools, respectively. A total of 70 peaks belonging to sugars, fatty acids/esters, steroids, amino acids and organic acids were identified including sucrose, melibiose, glucose and fructose as major sugars, with butyl caprylate, hydroxybutanoic acid and malic acid contributing to the discrimination between seed species at different maturity stages. The investigation of total protein content revealed comparable protein levels amongst all examined seeds with the highest level detected at 20.1% w/w in mature fava bean. Results of this study provide a novel insight on cereal and leguminous seeds’ metabolomics in the context of their maturity stages for the first time in literature.

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Section: Resultsmentioning

confidence: 99%

Effect of Maturity Stage on Cereal and Leguminous Seeds’ Metabolome as Analyzed Using Gas Chromatography Mass-Spectrometry (GC-MS) and Chemometric Tools

et al. 2023

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“…12,13 Novozym 435, lipase, and Candida antarctica lipase B were also successfully used to synthesize various esters. [14][15][16] n-Octyl acetate is an ester produced by the reaction of n-octanol with acetic acid. Balakrishnan and Rajendran have reported a polymer-supported TiCl 4 catalyst for synthesizing octyl acetate.…”

Section: Introductionmentioning

confidence: 99%

“…Cation‐exchange resins Amberlyst 15 and Amberlyst 36 heterogeneous catalysts were used earlier for the esterification reaction 12,13 . Novozym 435, lipase, and Candida antarctica lipase B were also successfully used to synthesize various esters 14–16 …”

Section: Introductionmentioning

confidence: 99%

Synthesis of n‐octyl acetate over fly ash cenosphere supported 10‐tungsto‐2‐vanadophosphoric acid (H₅PW₁₀V₂O₄₀) as a heterogeneous catalyst: Kinetic study

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Rathod

2023

Int J of Chemical Kinetics

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A 10-tungsto-2-vanadophosphoric acid (H 5 PW 10 V 2 O 40 ) catalyst was prepared, supported on pre-treated fly ash cenosphere (FAC) by the wet impregnation method, and characterized by analytical methods like Brunauer-Emmett-Teller (BET), x-ray powder diffraction (XRD), Fourier transform infrared (FTIR), and scanning electron microscope (SEM). The prepared catalyst H 5 PW 10 V 2 O 40 /FAC was used to synthesize n-octyl acetate in the batch reactor. The influence of various reaction parameters on conversion was investigated and optimized. The maximum conversion of 81.43% was obtained at optimal conditions, that is, temperature 383 K, catalyst loading 5% (w), molar ratio 1:2 (acetic acid to noctyl alcohol), speed of agitation 400 rpm, and molecular sieves 6% (w). The H 5 PW 10 V 2 O 40 /FAC catalyst recyclability shows that it can be used up to four reaction cycles. The reaction progress was represented by the pseudo secondorder homogeneous (PH) model, and the energy of activation of the reaction was computed as 28.89 kJ/mol. The heterogeneous kinetic models, such as Langmuir Hinshelwood Hougen Watson (LHHW) and Eley-Rideal (ER), were also used to test kinetic data. It was seen that the LHHW model with reactant and product gave the best fit for the experimental data. K E Y W O R D Sesterification, fly ash cenosphere, kinetics, n-octyl acetate, 10-tungsto-2-vanadophosphoric acid (H 5 PW 10 V 2 O 40 )

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“…Moreover, water accumulation on the media, as well as promoting the hydrolysis of the formed ester, tends to form layers of water on the biocatalysts, promoting enzyme inactivation and worsening its performance. This deleterious effect has been reduced by using very hydrophobic supports for enzyme immobilization [34][35][36][37][38][39][40], ultrasounds [41][42][43][44][45][46] or physical methods [47][48][49][50][51]. Additionally, molecular sieves have been used to capture the water formed during the reaction [52][53][54], but this may increase the risk of reducing too much the available water and leaves conditions unfavourable for the enzyme performance, therefore demanding a careful control of the water activity through the corresponding water adsorption [55][56][57].…”

Section: Introductionmentioning

confidence: 99%

On the Use of Orthoformates as an Efficient Approach to Enhance the Enzymatic Enantioselective Synthesis of (S)-Ibuprofen

et al. 2023

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In this paper, we describe the effectiveness of the combination between an organic solvent system mixture with orthoformates with different chain sizes from one to four carbon atoms. These orthoesters have been used as a “water trapper/alcohol releaser molecule” to reach a notable improvement in enantioselectivity and enantiomeric excess of our target compound, (S)-2-(4-isobutylphenyl)propanoic acid (ibuprofen eutomer), during the enzymatic kinetic resolution of rac-ibuprofen using immobilized lipase B of Candida antarctica as a biocatalyst. At the same time, one of the great problems of biocatalysis in organic media has been solved by eliminating excess water in the medium that allows the reversibility of the reaction. Following the optimization of the reaction conditions, an increase in enantiomeric excess and enantioselectivity was reached by using these acyl donors in the presence of a cosolvent.

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Ultrasound assisted enzyme catalysed synthesis of butyl caprylate in solvent free system

Cited by 3 publications

References 43 publications

Effect of Maturity Stage on Cereal and Leguminous Seeds’ Metabolome as Analyzed Using Gas Chromatography Mass-Spectrometry (GC-MS) and Chemometric Tools

Effect of Maturity Stage on Cereal and Leguminous Seeds’ Metabolome as Analyzed Using Gas Chromatography Mass-Spectrometry (GC-MS) and Chemometric Tools

Synthesis of n‐octyl acetate over fly ash cenosphere supported 10‐tungsto‐2‐vanadophosphoric acid (H₅PW₁₀V₂O₄₀) as a heterogeneous catalyst: Kinetic study

On the Use of Orthoformates as an Efficient Approach to Enhance the Enzymatic Enantioselective Synthesis of (S)-Ibuprofen

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Ultrasound assisted enzyme catalysed synthesis of butyl caprylate in solvent free system

Cited by 3 publications

References 43 publications

Effect of Maturity Stage on Cereal and Leguminous Seeds’ Metabolome as Analyzed Using Gas Chromatography Mass-Spectrometry (GC-MS) and Chemometric Tools

Effect of Maturity Stage on Cereal and Leguminous Seeds’ Metabolome as Analyzed Using Gas Chromatography Mass-Spectrometry (GC-MS) and Chemometric Tools

Synthesis of n‐octyl acetate over fly ash cenosphere supported 10‐tungsto‐2‐vanadophosphoric acid (H5PW10V2O40) as a heterogeneous catalyst: Kinetic study

On the Use of Orthoformates as an Efficient Approach to Enhance the Enzymatic Enantioselective Synthesis of (S)-Ibuprofen

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Synthesis of n‐octyl acetate over fly ash cenosphere supported 10‐tungsto‐2‐vanadophosphoric acid (H₅PW₁₀V₂O₄₀) as a heterogeneous catalyst: Kinetic study